
Johnstown serves as the industrial and topographic anchor of this region, situated at the confluence of the Conemaugh River and Stony Creek. The landscape is dominated by the steep ridges of Laurel Hill, which forces a dense concentration of settlements and transportation infrastructure into the narrow river valleys. The path of the Pennsylvania RR is critical to the area's development, winding through communities like Mineral Point and South Fork as it follows the water level. Evidence of earlier engineering feats is visible at the Old Portage RR Tunnel, a remnant of the historic transportation corridor through the mountains.
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6 editions found
1902 · Indiana
USGS Topo · 1:62,500
1902 · Ebensburg
USGS Topo · 1:62,500
1902 · Patton
USGS Topo · 1:62,500
1902 · Barnesboro
USGS Topo · 1:62,500
1904 · Barnesboro
USGS Topo · 1:62,500
1904 · Patton
USGS Topo · 1:62,500
1904 · Ebensburg
USGS Topo · 1:62,500
1904 · Johnstown
USGS Topo · 1:62,500
1907 · Johnstown
USGS Topo · 1:62,500
1908 · Bedford
USGS Topo · 1:62,500